CVE-2018-15396: Cisco Unity Connection File Upload Denial of Service Vulnerability
First published: Wed Oct 03 2018(Updated: )
A vulnerability in the Bulk Administration Tool (BAT) for Cisco Unity Connection could allow an authenticated, remote attacker to cause high disk utilization, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software does not restrict the maximum size of certain files that can be written to disk. An attacker who has valid administrator credentials for an affected system could exploit this vulnerability by sending a crafted, remote connection request to an affected system. A successful exploit could allow the attacker to write a file that consumes most of the available disk space on the system, causing application functions to operate abnormally and leading to a DoS condition.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Unity Connection | =12.5 |
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Reference Links
Frequently Asked Questions
What is CVE-2018-15396?
CVE-2018-15396 is a vulnerability in the Bulk Administration Tool (BAT) for Cisco Unity Connection that could allow an authenticated, remote attacker to cause high disk utilization, resulting in a denial of service (DoS) condition.
How can an attacker exploit CVE-2018-15396?
An attacker can exploit CVE-2018-15396 by using the Cisco Unity Connection Bulk Administration Tool (BAT) to send excessive requests, causing high disk utilization and a denial of service (DoS) condition.
What is the severity of CVE-2018-15396?
The severity of CVE-2018-15396 is medium with a CVSS score of 6.8.
Which version of Cisco Unity Connection is affected by CVE-2018-15396?
Cisco Unity Connection version 12.5 is affected by CVE-2018-15396.
How can I mitigate the vulnerability in Cisco Unity Connection?
To mitigate the vulnerability, it is recommended to apply the relevant security patch provided by Cisco or upgrade to a non-affected version of Cisco Unity Connection.
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